1.

C_(6)H_(5)-CH=CHCHO overset(x)to C_(6)H_(5)CH=CHCH_(2)OH. In the above sequence X can be

Answer»

`H_(2)`/Ni
`NaBH_(4)`
`K_(2)Cr_(2)O_(7)//H^(+)`
Both (a) and (b)

Solution :`NaBH_(4)` and `LiAIH_(4)` attacks only carbonyl group and reduceit into alcohol group. They do not attack on DOUBLE BOND.
`underset("cinnamic aldehyde")(C_(6)H_(5)-CH=CHCHO)overset(NaBH_(4))to C_(6)H_(5)-underset("cinnamicalcohol")(CH=CH.CH_(2)OH)`


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